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Information processing device

  • US 6,575,618 B1
  • Filed: 07/19/1999
  • Issued: 06/10/2003
  • Est. Priority Date: 11/19/1997
  • Status: Expired due to Fees
First Claim
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1. An information processing device comprising:

  • a support body;

    a rotary body supported on the support body for rotation around a circumference of the support body by manual operation of a user;

    a detection sensor mechanism provided on the support body for detecting a rotational angle and a rotational direction of the rotary body around the circumference of the support body;

    signal generating means, responsive to the rotational angle and the rotational direction detected by the detection sensor mechanism, for generating an output signal;

    a display device for displaying information corresponding to the output signal generated by the signal generating means; and

    an optical pattern formed on a surface of the rotary body and arranged at a position that opposes the detection sensor mechanism, the detection sensor mechanism comprising a light emitting means for irradiating a detection light toward the optical pattern, and a light receiving means for detecting a reflected light from the optical pattern, and the detection sensor mechanism detecting the rotational angle and the rotational direction of the rotary body in response to light detected by the light receiving means.

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